Combination door-lock.



G. D. CABR. comsmmow DOOR LdcK. APPLICATION FILED SEPLZI. 195.

1,242,140; Patented m; 9, 1917. I 2 sugars-SHEET 1.

G. 0. CARR.

COMBINATION 'DO0R,LOCK. APPLICATION FILED SEPT-,2]. m5.

Patented Oct. 9,1917.

, 2 SHEETSQ'SHEET 2.

EORGE n. CARR, orfnn'raortnnicnrea v. I

' COM INATION omma? 'Specificationof Letters latent Patented Qct, 9, 1917,,

Application filed September 21, 1915. Serial No. 51,819.

useful Improvements in Combination Door-.

Locks; and I do hereby declare the following to be a full, clear, and exact descrlption of the invention, such as will'enablerothers skilled in the art to which. it appertains to make and use the same.

This invention has for 1ts primary object to provide an improved type of combination lock especially designed for use in connection with house doors and embodying means y whereby the latch bolt may be locked or released from either the inside or outside of the door.

With this and other objects in view, the v invention consists in the novel construction,

arrangement and formation of parts as will be hereinafter specifically described, claimed} and illustrated in the accompanymg drawings, in which: Figure 1 represents a fragmental side elevation of. a door, illustrating the im-' proved combination lock applied" to use thereon,

Fig. 2 represents a fragmental edge elevation of the door illustrating the lo'ckiapplied thereto, w

Fig. 3 represents a side elevation of the I lock removed, the side plate being also re- ,moved, V

Fig. 4 represents a side elevation similar to Fig. 3 illustrating the latch bolt in retracted position,

Fig. 5 represents a transverse sectional view on the line 55 of Fig. 3,

Fig. 6 represents a side elevation of the lock casing, the parts of the lock being removed,

Fig. 7 represents a fragmental detail sectional view through the lock, illustrating the means for retaining the tumblers against loose movement, and

Fig. 8 represents a side elevation of the several tumblers and spacing elements of the lock removed.

Referring to the drawing in detail, wherein similar reference numerals designate corresponding parts, throughout the several' views, the numeral 10 indicates generally the casing of the lock, the outer end wall of which is extended and apertured, as at 11, to receive screws, or equivalent means,

whereby the lock. is secured in position in the recessformed in the freeed-ge-ofa door 12. preferably removable, whereby .when the .One side wall 13 of the-casing 10 is.-

lock is removed from the dooraccess may 7.

be had tothe interior thereof. a

A sleeve 14 having an angular bore 15- is rotatably mounted'in the side wallsof the casing 10 and isadapted to receive-the shank of a door knob'16. The sleeve 14: isformed with a radially projecting arm 17 engaged? within a recess 18 formed in an L-sha'p'ed member 19, slidably mounted in a passage 20 formed by-parti'tions 21 arranged in the with one of a pair of laterally projecting casing 10. ,The, upper angularlydirected fend 22 of the slidable member 19. is engaged.

cars 23 formed upon the slidable bolt 24-.

The outer extremity of the bolt 24 is'prefeh ablybeveled and the inner end thereof-is.

formed with a longitudinal slot 25kslidably receiving a stopmember 26 formed integral with the casing 10 and constituting an abut mentv for one end of a spring 27 engaged in One of the partitions 21 is extendedto provide a substantially circular f housingf29 for the tumblers of the lock-tobe hereinafter described, and said. housing, at diametrical-ly opposed points is formed with recesses 30. The flange orvhousing 29 is also formed with a recess 31 of adequate width to slidably receive the inner extremity of the I bolt 24:.

A plurality of tumblers 32, 33 and 34 are rotatably mounted in the housing 29 and the two outer members are normally retained in spaced relation to the intermediate member 33 by spacing elements 35, which latter are formed with oppositely directed ribs or projections 36 engaged in the recesses 30 of the housing 29 to lock the spaclng elements against rotary movement therein.. The spacing elements 35 are cutaway, as at 37, to accommodate sliding movement of the bolt 24. The end tumblers 32 and 34 are formed with axial enlargements 38 and 39, respectively, which are rotatably mounted in openings formed in the sides of the casing 10. Each of the several tumblers is formed with a recess 40 adapted, when the several recesses are moved into alinement with the cutaway portion 31 of the housing or flange 29, to permit the bolt 24 to be moved inwardly to inoperative position, as illustrated in Fig. 4. The outer'tnmblers 32 34 are formed with inwardlv directed lugs or pins 41 and 42, respectively, Which-"are" adapted to engage, during rotationof said i tumblers, a pin 43 secured in and projecting laterally of theopposite side faces of the" intermediatetumbler 33; Shanks 44' are removably secured in the 'outert1r1nb1ers 32 and 34 and project oppositely through apertures 45 fornied in? 'tlre doorr12, =P1ates 46 arese'c-uredto.thedobr "12 over "the apertures v 45 .and are formed with aperture's 47'. having internal?shoulders:or flanges tS: receiving the *inner portions 015 operating fkIl'OlOS 492- Plates 50 are secured-to the finnerenol's -of the= k1iobs-r 49 by screws" 51, r or i equi-valent means, and are engaged with 'theshoulders or flanges 48130" secure "the knobs against :removal from -the: pl'ates 46. 7 The :knobs rare also'formed WithwrecessesfiQ non:- 'rot'atably receiving the 1 shanks 44a c The-partition 21- is rforinedwith a recess 54' receiving a ietainirrg element" 5 5 which 1 is normal ly fretaiined 'imiengagement with the -cireurnferential edges of the tumblers i 82,;f33 andi84 by thertensionuoi' a spring 562 Each of the sev'eral tumblers is formed with g g a notch "57 sor"'arranged that when'fthe several reces's'es lO are; moved into} alinement :toi =per-I mit i the bo1t 1 24-" to be retracted, ithe recesses or notches 57 are; moved into 'alinement and thetretainirig element *55 1 moved 1 forwardly under 7itlie'+ infl l 1 ei1 36' ()ii the spring 56 and engaged in said notcha thns resiliently retaining the several tuni blei s 'in adjusted 100-- SitiOIlzf 1 V A combfmatio'nwlock' including "a casin g a circular housing sin said casing having-a rel? atively .iarge rec'ess and :relatively small diametrically i'opposed 'n'ecesses therein, a lug carried the casing projecting into the relatively large recess in the housing, a bolt slidably -mounted-i n the casing, movable into the relatively large recess in the housing 45 and having a slot in its inner end receiving said'lug, a spring confined between the lug and bolt, a plurality of disk shaped" tumblers rota'tabliy: mounted: inc the housing having recesses adapted to be moved into registra- 50 tion with the relatively largei recess in the 1 honsirrgto receivethe inner terminalflofisaid bolt, an-nular 1spacing :members interposed betweenthe tumblers havingc-portionscut:

away to receive said boltydiametrically optransversenotch inits periphery, sa-idcirq cular'housingbelng,providedwvlthfa groove fiof I forming a guide channel, a retaining e1e- Inent slidabl-y mounted in said: guidezcharinl and :adapted-:tov engagef-in the notches in-the,-= tumblers, and a spring normallyjiholdingi;

saidretainingelementin anextcnded-position to-lwl-dsaid: retainingjelement iIl-Z BII: gagem'ent: :with the tumblers, the transverse notches and the recesses which receive thefi boltiinisai'd tumblers being sorarrangedin relation to: each other that when the retain-v mg I element s is received-'- :in the transverse notches the recesses' are in registration With themrelatively .lZLI QB IGCGSS in the housing,;: whereby the tumblers are resiliently held in" position; a i In testimony whereof Laffix my signature in presencewof two witnesses I v i GEORGE-.D; CARR;

iVi-tnessjesr c FRANK MOELROY, MEYER IWEIsMAFN.

' Copies of this patent maybe'obtained ior fivw cents "each, by addressing the Commissioner of Patents, a

Washington, new v I 

